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Abstract. Carbon paste electrodes bulk-modified with Bi2O3 were used for the determination of Cd(II) and Pb(II). The best composition was 1% (wt%) Bi2O3 in the paste. The measurements were made by differential pulse voltammetry in the potential range from 1.2V to 0.3V. The peak potential of the reoxidation of Cd is 0.85V, and of Pb 0.60V vs. SCE. The lowest concentration that could be determined was...
Abstract. A simple and rapid procedure, utilising constant-current stripping analysis (CCSA) at a carbon-paste electrode containing tricresyl phosphate as a pasting liquid (TCP-CPE), has been developed for the determination of iodide in table salt. Because of a synergistic accumulation mechanism based on ion-pairing and extraction of iodide in combination with electrolytic pretreatment of the TCP-CPE,...
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